package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.github.xiaoymin.knife4j.core.util.CollectionUtils;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import org.codehaus.jettison.json.JSONException;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.*;
import java.util.stream.Collectors;

@Service
public class OrderServiceImpl implements OrderService {
    @Autowired
    private OrderMapper orderMapper;

    @Autowired
    private OrderDetailMapper orderDetailMapper;

    @Autowired
    private AddressBookMapper addressBookMapper;

    @Autowired
    private ShoppingCartMapper shoppingCartMapper;

    @Autowired
    private WeChatPayUtil weChatPayUtil;

    @Autowired
    private UserMapper userMapper;

    @Autowired
    private WebSocketServer webSocketServer;

    @Value("${sky.shop.address}")
    private String shopAddress;

    @Value("${sky.baidu.ak}")
    private String ak;

    /**
     * 用户下单
     *
     * @param ordersSubmitDTO
     * @return
     */
    @Override
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) throws JSONException {
        //1.处理业务异常情况（地址为空，购物车为空）
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        //处理地址为空
        if (addressBook == null) {
            //抛出业务异常
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }
        //处理超出配送范围
        checkOutOfRange(addressBook.getCityName() + addressBook.getDistrictName() + addressBook.getDetail());
        //处理购物车为空
        Long userId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart = new ShoppingCart();
        shoppingCart.setUserId(userId);
        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
        if (shoppingCartList == null || shoppingCartList.size() == 0) {
            //抛出业务异常
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }
        //2.向订单表插入一条数据
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO, orders);
        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(Orders.UN_PAID);
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setPhone(addressBook.getPhone());
        orders.setConsignee(addressBook.getConsignee());
        orders.setUserId(userId);
        orders.setAddress(addressBook.getProvinceName() + addressBook.getCityName() + addressBook.getDetail());

        orderMapper.insert(orders);
        //3.向订单明细表插入多条数据
        List<OrderDetail> orderDetailList = new ArrayList<>();
        for (ShoppingCart cart : shoppingCartList) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart, orderDetail);
            orderDetail.setOrderId(orders.getId());//设置当前订单明细关联的订单id
            orderDetailList.add(orderDetail);
        }

        orderDetailMapper.insertBatch(orderDetailList);
        //4.下单成功后，清空当前用户的购物车数据
        shoppingCartMapper.deleteById(userId);
        //5.封装OrderSubmitVO数据
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(orders.getId())
                .orderTime(orders.getOrderTime())
                .orderNumber(orders.getNumber())
                .orderAmount(orders.getAmount())
                .build();
        return orderSubmitVO;
    }

    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

        //调用微信支付接口，生成预支付交易单
//        JSONObject jsonObject = weChatPayUtil.pay(
//                ordersPaymentDTO.getOrderNumber(), //商户订单号
//                new BigDecimal(0.01), //支付金额，单位 元
//                "苍穹外卖订单", //商品描述
//                user.getOpenid() //微信用户的openid
//        );
        JSONObject jsonObject = new JSONObject();

        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        //通过WebSocket向客户端推送消息
        Map map = new HashMap();
        String orderNumber = ordersPaymentDTO.getOrderNumber();
        Orders orders = orderMapper.getByNumberAndUserId(orderNumber, userId);
        Long id = orders.getId();
        map.put("type", 1);//1表示来单提醒
        map.put("orderId", id);
        map.put("content", "来单提醒,订单号：" + orderNumber);

        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);

        return vo;

    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();

        // 根据订单号查询当前用户的订单
        Orders ordersDB = orderMapper.getByNumberAndUserId(outTradeNo, userId);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);
        shoppingCartMapper.clean(userId);


    }

    /**
     * 用户端订单分页查询
     *
     * @param page
     * @param pageSize
     * @param status
     * @return
     */
    @Override
    public PageResult pageQuery4User(Integer page, Integer pageSize, Integer status) {
        PageHelper.startPage(page, pageSize);
        OrdersPageQueryDTO ordersPageQuery = new OrdersPageQueryDTO();
        ordersPageQuery.setUserId(BaseContext.getCurrentId());
        ordersPageQuery.setStatus(status);

        // 调用分页查询方法
        Page<Orders> pageInfo = orderMapper.pageQuery(ordersPageQuery);

        //查出订单明细，封装到OrderVO进行响应
        List<OrderVO> orderVOList = new ArrayList<>();
        if (pageInfo != null && pageInfo.getTotal() > 0) {
            for (Orders orders : pageInfo) {
                Long orderId = orders.getId();

                // 查询订单明细
                List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orderId);
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                orderVO.setOrderDetailList(orderDetailList);
                orderVOList.add(orderVO);
            }
        }
        return new PageResult(pageInfo.getTotal(), orderVOList);
    }

    /**
     * 查询订单详情
     *
     * @param id
     * @return
     */
    @Override
    public OrderVO getOrderDetail(Long id) {
        //根据id查询订单数据
        Orders orders = orderMapper.getById(id);

        //根据订单查询对应的订单明细
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);

        //封装VO
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders, orderVO);
        orderVO.setOrderDetailList(orderDetailList);
        return orderVO;
    }

    /**
     * 用户取消订单
     *
     * @param id
     */
    @Override
    public void userCancelById(Long id) throws Exception {
        Orders orders = orderMapper.getById(id);
        //判断订单是否存在
        if (orders == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        //判断订单是否可取消
        if (orders.getStatus() > 2) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        //取消订单
        Orders order = new Orders();
        order.setId(id);

        //如果订单处于待接单状态，需要进行退款
        if (orders.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            //调用微信支付退款接口
//            weChatPayUtil.refund(
//                    orders.getNumber(),//用户订单号
//                    orders.getNumber(),//商家退款单号
//                    new BigDecimal(0.01),
//                    new BigDecimal(0.01));
            //订单状态修改为“已取消”
            orders.setPayStatus(Orders.REFUND);
        }

        order.setStatus(Orders.CANCELLED);
        order.setCancelReason("用户取消");
        order.setCancelTime(LocalDateTime.now());
        orderMapper.update(order);
    }

    /**
     * 再来一单
     *
     * @param id
     */
    @Override
    public void repetition(Long id) {
        //根据订单id查询订单数据
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);

        //将订单详情转换为购物车对象
        List<ShoppingCart> shoppingCartList = orderDetailList.stream().map(orderDetail -> {
            ShoppingCart shoppingCart = new ShoppingCart();
            //将原订单详情里面的菜品信息重新复制到购物车对象中
            BeanUtils.copyProperties(orderDetail, shoppingCart);
            //设置用户id
            shoppingCart.setUserId(BaseContext.getCurrentId());
            return shoppingCart;
        }).collect(Collectors.toList());
        //添加到购物车
        shoppingCartMapper.insertBatch(shoppingCartList);
    }

    /**
     * 订单搜索
     *
     * @param ordersPageQueryDTO
     * @return
     */
    @Override
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());
        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);

        //需要额外返回订单菜品信息，将Orders对象列表转换成OrdersVO对象列表
        List<OrderVO> orderVOList = getOrderVOList(page);
        return new PageResult(page.getTotal(), orderVOList);
    }


    /**
     * 将Orders对象列表转换成OrdersVO对象列表
     *
     * @param page
     * @return
     */
    private List<OrderVO> getOrderVOList(Page<Orders> page) {
        List<OrderVO> orderVOList = new ArrayList<>();
        List<Orders> ordersList = page.getResult();
        if (!CollectionUtils.isEmpty(ordersList)) {
            for (Orders orders : ordersList) {
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                //获取订单菜品信息字符串
                String orderDishes = getOrderDishesStr(orders);
                //将订单菜品信息封装到orderVO中，并添加到orderVOList
                orderVO.setOrderDishes(orderDishes);
                orderVOList.add(orderVO);
            }
        }
        return orderVOList;
    }

    /**
     * 获取订单菜品信息字符串
     *
     * @param orders
     * @return
     */
    private String getOrderDishesStr(Orders orders) {

        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orders.getId());
        //// 将每一条订单菜品信息拼接为字符串（格式：宫保鸡丁*3；）
        List<String> orderDishList = orderDetailList.stream().map(orderDetail -> {
            String orderDish = orderDetail.getName() + "*" + orderDetail.getNumber() + ";";
            return orderDish;
        }).collect(Collectors.toList());

        //将该订单对应的所有菜品信息拼接在一起
        return String.join("", orderDishList);
    }

    /**
     * 各个状态的订单数量统计
     *
     * @return
     */
    @Override
    public OrderStatisticsVO statistics() {
        //根据状态，分别查询出待接单、待派送、派送中的订单数量
        Integer toBeConfirmed = orderMapper.countStatus(Orders.TO_BE_CONFIRMED);
        Integer confirmed = orderMapper.countStatus(Orders.CONFIRMED);
        Integer deliveryInProgress = orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);

        //封装成OrderStatisticsVO并返回
        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
        orderStatisticsVO.setConfirmed(confirmed);
        orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);

        return orderStatisticsVO;
    }

    /**
     * 接单
     *
     * @param ordersConfirmDTO
     */
    @Override
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders = Orders.builder().id(ordersConfirmDTO.getId())
                .status(Orders.CONFIRMED)
                .build();
        orderMapper.update(orders);
    }

    /**
     * 拒单
     *
     * @param ordersRejectionDTO
     */
    @Override
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) throws Exception {
        Orders orders = orderMapper.getById(ordersRejectionDTO.getId());
        //判断订单状态
        if (!Orders.TO_BE_CONFIRMED.equals(orders.getStatus()) || orders == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //判断订单是否支付
        if (orders.getPayStatus().equals(Orders.PAID)) {
            //退款
//            String refund = weChatPayUtil.refund(
//                    orders.getNumber(),
//                    orders.getNumber(),
//                    new BigDecimal(0.01),
//                    new BigDecimal(0.01));
        }
        //更新订单状态
        orders.setStatus(Orders.CANCELLED);
        orders.setRejectionReason(ordersRejectionDTO.getRejectionReason());
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    /**
     * 取消订单
     *
     * @param ordersCancelDTO
     */
    @Override
    public void cancel(OrdersCancelDTO ordersCancelDTO) throws Exception {
        Orders orders = orderMapper.getById(ordersCancelDTO.getId());
        //判断订单支付状态
        if (Orders.PAID.equals(orders.getPayStatus())) {
//            String refund = weChatPayUtil.refund(
//                    orders.getNumber(),
//                    orders.getNumber(),
//                    new BigDecimal(0.01),
//                    new BigDecimal(0.01));
        }
        //更新订单状态
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelTime(LocalDateTime.now());
        orders.setCancelReason(ordersCancelDTO.getCancelReason());

        orderMapper.update(orders);
    }

    /**
     * 派送订单
     *
     * @param id
     */
    @Override
    public void delivery(Long id) {
        Orders orders = orderMapper.getById(id);
        //判断订单状态
        if (!Orders.CONFIRMED.equals(orders.getStatus()) || orders == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //更新订单状态
        orders.setStatus(Orders.DELIVERY_IN_PROGRESS);
        orderMapper.update(orders);
    }

    /**
     * 完成订单
     *
     * @param id
     */
    @Override
    public void complete(Long id) {
        Orders orders = orderMapper.getById(id);
        //判断订单状态
        if (!Orders.DELIVERY_IN_PROGRESS.equals(orders.getStatus()) || orders == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        //更新订单状态
        orders.setStatus(Orders.COMPLETED);
        orderMapper.update(orders);
    }


    /**
     * 检查客户的收货地址是否超出配送范围
     */
    private void checkOutOfRange(String address) throws JSONException {
        Map map = new HashMap();
        map.put("address", shopAddress);
        map.put("output", "json");
        map.put("ak", ak);

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if (!jsonObject.getString("status").equals("0")) {
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address", address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if (!jsonObject.getString("status").equals("0")) {
            throw new OrderBusinessException("收货地址解析失败");
        }

        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin", shopLngLat);
        map.put("destination", userLngLat);
        map.put("steps_info", "0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if (!jsonObject.getString("status").equals("0")) {
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if (distance > 100000) {
            //配送距离超过100000米
            throw new OrderBusinessException("超出配送范围");
        }
    }

    /**
     * 客户催单
     *
     * @param id
     */
    @Override
    public void reminder(Long id) {
        Orders orders = orderMapper.getById(id);
        //判断订单状态
        if (orders == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Map map = new HashMap();
        map.put("type", 2);//2表示客户催单
        map.put("orderId", orders.getId());
        map.put("content", "订单号:" + orders.getNumber());
        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);
    }


}
